noramlize the string . concode_field_sep String HDFS_HOME concode_elem_sep String COMMON_HOME concode_elem_sep String prefix concode_elem_sep String HOME concode_elem_sep File dir concode_elem_sep String HADOOP_USER_LIBS concode_elem_sep String EMPTY_STR concode_elem_sep DirectoryFilter filter concode_elem_sep String MAPRED_HOME concode_elem_sep AcceptAllDirectoryFilter INSTANCE concode_elem_sep String name concode_elem_sep String PREFIX concode_elem_sep boolean strict concode_field_sep Collection<SearchDirectory> parseUserLibs concode_elem_sep Collection<SearchDirectory> parseUserLibs concode_elem_sep boolean test concode_elem_sep boolean test concode_elem_sep boolean test concode_elem_sep boolean test concode_elem_sep List<URL> classpathForClassLoader concode_elem_sep String systemOrEnv concode_elem_sep boolean isEmpty concode_elem_sep boolean exists concode_elem_sep File[] files concode_elem_sep HadoopLocations locations concode_elem_sep Collection<SearchDirectory> classpathDirectories
String function ( String arg0 ) { assert arg0 != null ; return arg0 . trim ( ) . toLowerCase ( ) ; }