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checkstyle.xml

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<?xml version="1.0"?>
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<!DOCTYPE module PUBLIC
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"-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
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"https://checkstyle.org/dtds/configuration_1_3.dtd">
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<!--
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Checkstyle configuration that checks the Google coding conventions from Google Java Style
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that can be found at https://google.github.io/styleguide/javaguide.html.
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Checkstyle is very configurable. Be sure to read the documentation at
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http://checkstyle.sf.net (or in your downloaded distribution).
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To completely disable a check, just comment it out or delete it from the file.
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Authors: Max Vetrenko, Ruslan Diachenko, Roman Ivanov.
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-->
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<module name="Checker">
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<property name="charset" value="UTF-8"/>
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<property name="severity" value="error"/>
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<property name="fileExtensions" value="java, properties, xml"/>
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<!-- Checks for whitespace -->
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<!-- See http://checkstyle.sf.net/config_whitespace.html -->
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<module name="FileTabCharacter">
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<property name="eachLine" value="true"/>
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</module>
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<module name="NewlineAtEndOfFile">
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<property name="fileExtensions" value="java, properties, xml"/>
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</module>
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<module name="LineLength">
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<property name="max" value="100"/>
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<property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
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</module>
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<module name="TreeWalker">
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<module name="OuterTypeFilename"/>
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<module name="IllegalTokenText">
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<property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
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<property name="format"
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value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
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<property name="message"
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value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>
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</module>
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<module name="AvoidEscapedUnicodeCharacters">
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<property name="allowEscapesForControlCharacters" value="true"/>
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<property name="allowByTailComment" value="true"/>
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<property name="allowNonPrintableEscapes" value="true"/>
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</module>
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<module name="AvoidStarImport"/>
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<module name="IllegalImport"/>
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<module name="RedundantImport"/>
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<module name="UnusedImports"/>
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<module name="OneTopLevelClass"/>
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<module name="NoLineWrap"/>
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<module name="EmptyBlock">
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<property name="option" value="TEXT"/>
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<property name="tokens"
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value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
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</module>
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<module name="NeedBraces"/>
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<module name="LeftCurly"/>
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<module name="RightCurly">
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<property name="id" value="RightCurlySame"/>
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<property name="tokens"
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value="LITERAL_TRY, LITERAL_CATCH, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE,
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LITERAL_DO"/>
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</module>
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<module name="RightCurly">
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<property name="id" value="RightCurlyAlone"/>
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<property name="option" value="alone"/>
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<property name="tokens"
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value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, STATIC_INIT,
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INSTANCE_INIT"/>
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</module>
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<module name="WhitespaceAround">
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<property name="allowEmptyConstructors" value="true"/>
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<property name="allowEmptyLambdas" value="true"/>
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<property name="allowEmptyMethods" value="true"/>
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<property name="allowEmptyTypes" value="true"/>
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<property name="allowEmptyLoops" value="true"/>
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<message key="ws.notFollowed"
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value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks may only be represented as '{}' when not part of a multi-block statement (4.1.3)"/>
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<message key="ws.notPreceded"
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value="WhitespaceAround: ''{0}'' is not preceded with whitespace."/>
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</module>
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<module name="OneStatementPerLine"/>
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<module name="MultipleVariableDeclarations"/>
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<module name="ArrayTypeStyle"/>
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<module name="MissingSwitchDefault"/>
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<module name="FallThrough"/>
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<module name="VisibilityModifier">
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<property name="protectedAllowed" value="true"/>
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</module>
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<module name="UpperEll"/>
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<module name="ModifierOrder"/>
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<module name="EmptyLineSeparator">
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<property name="allowNoEmptyLineBetweenFields" value="true"/>
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<property name="allowMultipleEmptyLines" value="false"/>
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<property name="allowMultipleEmptyLinesInsideClassMembers" value="false"/>
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</module>
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<module name="SeparatorWrap">
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<property name="id" value="SeparatorWrapDot"/>
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<property name="tokens" value="DOT"/>
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<property name="option" value="nl"/>
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</module>
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<module name="SeparatorWrap">
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<property name="id" value="SeparatorWrapComma"/>
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<property name="tokens" value="COMMA"/>
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<property name="option" value="EOL"/>
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</module>
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<module name="SeparatorWrap">
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<!-- ELLIPSIS is EOL until https://github.com/google/styleguide/issues/258 -->
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<property name="id" value="SeparatorWrapEllipsis"/>
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<property name="tokens" value="ELLIPSIS"/>
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<property name="option" value="EOL"/>
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</module>
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<module name="SeparatorWrap">
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<!-- ARRAY_DECLARATOR is EOL until https://github.com/google/styleguide/issues/259 -->
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<property name="id" value="SeparatorWrapArrayDeclarator"/>
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<property name="tokens" value="ARRAY_DECLARATOR"/>
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<property name="option" value="EOL"/>
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</module>
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<module name="SeparatorWrap">
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<property name="id" value="SeparatorWrapMethodRef"/>
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<property name="tokens" value="METHOD_REF"/>
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<property name="option" value="nl"/>
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</module>
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<module name="PackageName">
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<property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>
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<message key="name.invalidPattern"
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value="Package name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="TypeName">
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<message key="name.invalidPattern"
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value="Type name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="MemberName">
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<property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
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<message key="name.invalidPattern"
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value="Member name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="ParameterName">
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<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
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<message key="name.invalidPattern"
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value="Parameter name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="LambdaParameterName">
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<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
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<message key="name.invalidPattern"
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value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="CatchParameterName">
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<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
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<message key="name.invalidPattern"
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value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="LocalVariableName">
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<property name="tokens" value="VARIABLE_DEF"/>
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<property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
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<message key="name.invalidPattern"
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value="Local variable name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="ClassTypeParameterName">
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<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
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<message key="name.invalidPattern"
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value="Class type name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="MethodTypeParameterName">
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<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
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<message key="name.invalidPattern"
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value="Method type name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="InterfaceTypeParameterName">
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<property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
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<message key="name.invalidPattern"
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value="Interface type name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="NoFinalizer"/>
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<module name="GenericWhitespace">
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<message key="ws.followed"
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value="GenericWhitespace ''{0}'' is followed by whitespace."/>
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<message key="ws.preceded"
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value="GenericWhitespace ''{0}'' is preceded with whitespace."/>
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<message key="ws.illegalFollow"
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value="GenericWhitespace ''{0}'' should followed by whitespace."/>
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<message key="ws.notPreceded"
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value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>
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</module>
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<module name="Indentation">
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<property name="basicOffset" value="4"/>
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<property name="braceAdjustment" value="0"/>
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<property name="caseIndent" value="4"/>
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<property name="throwsIndent" value="8"/>
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<property name="lineWrappingIndentation" value="8"/>
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<property name="arrayInitIndent" value="4"/>
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</module>
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<module name="AbbreviationAsWordInName">
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<property name="ignoreFinal" value="false"/>
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<property name="allowedAbbreviationLength" value="1"/>
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</module>
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<module name="OverloadMethodsDeclarationOrder"/>
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<module name="VariableDeclarationUsageDistance"/>
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<module name="CustomImportOrder">
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<property name="sortImportsInGroupAlphabetically" value="true"/>
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<property name="separateLineBetweenGroups" value="true"/>
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<property name="customImportOrderRules" value="STATIC###THIRD_PARTY_PACKAGE"/>
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</module>
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<module name="MethodParamPad"/>
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<module name="NoWhitespaceBefore">
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<property name="tokens"
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value="COMMA, SEMI, POST_INC, POST_DEC, DOT, ELLIPSIS, METHOD_REF"/>
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<property name="allowLineBreaks" value="true"/>
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</module>
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<module name="ParenPad"/>
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<module name="OperatorWrap">
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<property name="option" value="NL"/>
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<property name="tokens"
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value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR,
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LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR, METHOD_REF "/>
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</module>
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<module name="AnnotationLocation">
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<property name="id" value="AnnotationLocationMostCases"/>
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<property name="tokens"
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value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF"/>
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</module>
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<module name="AnnotationLocation">
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<property name="id" value="AnnotationLocationVariables"/>
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<property name="tokens" value="VARIABLE_DEF"/>
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<property name="allowSamelineMultipleAnnotations" value="true"/>
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</module>
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<module name="NonEmptyAtclauseDescription"/>
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<module name="MethodName">
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<property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$"/>
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<message key="name.invalidPattern"
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value="Method name ''{0}'' must match pattern ''{1}''."/>
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</module>
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<module name="SingleLineJavadoc">
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<property name="ignoreInlineTags" value="false"/>
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</module>
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<module name="EmptyCatchBlock">
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<property name="exceptionVariableName" value="expected"/>
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</module>
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<module name="CommentsIndentation"/>
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<module name="DeclarationOrder"/>
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<module name="SingleSpaceSeparator">
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<property name="validateComments" value="true"/>
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</module>
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</module>
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</module>

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