question: tries to set a null naming pattern . concode_field_sep BasicThreadFactory.Builder builder concode_elem_sep String PATTERN concode_field_sep void testNewThreadNoPriority concode_elem_sep void testNewThreadDaemonFalse concode_elem_sep void testBuilderReset concode_elem_sep void testNewThreadNamingPattern concode_elem_sep void testBuilderResetAfterBuild concode_elem_sep void checkDaemonFlag concode_elem_sep void testBuildWrappedFactoryNull concode_elem_sep void testNewThreadDaemonTrue concode_elem_sep void testBuildUncaughtExceptionHandlerNull concode_elem_sep void testNewThreadNoExHandler concode_elem_sep void setUp concode_elem_sep void checkFactoryDefaults concode_elem_sep void testBuildDefaults concode_elem_sep void testNewThreadNoNamingPattern concode_elem_sep void testNewThreadNoDaemonFlag concode_elem_sep void testNewThreadPriority concode_elem_sep void testNewThreadExHandler
target: void function ( ) { builder . namingPattern ( null ) ; }