question: public boolean isMacroSet ( String macro , Operator operator ) { synchronized ( LOCK ) { if ( macroMap . containsKey ( macro ) || PREDEFINED_OPERATOR_INDEPENDENT_MACROS . contains ( macro ) ) { return true ; } } return operator != null && PREDEFINED_OPERATOR_DEPENDENT_MACROS . contains ( macro ) ; }
target:  Checks whether a provided macro was set.