docs: public final void mHexDigit() throws RecognitionException {
  		try {
  			// src/main/resources/org/drools/compiler/lang/DRL5Lexer.g:122:10: ( ( '0' .. '9' | 'a' .. 'f' | 'A' .. 'F' ) )
  			// src/main/resources/org/drools/compiler/lang/DRL5Lexer.g:
  			{
  			if ( (input.LA(1) >= '0' && input.LA(1) <= '9')||(input.LA(1) >= 'A' && input.LA(1) <= 'F')||(input.LA(1) >= 'a' && input.LA(1) <= 'f') ) {
  				input.consume();
  				state.failed=false;
  			}
  			else {
  				if (state.backtracking>0) {state.failed=true; return;}
  				MismatchedSetException mse = new MismatchedSetException(null,input);
  				recover(mse);
  				throw mse;
  			}
  			}
  
  		}
  		finally {
  			// do for sure before leaving
  		}
  	}