protected ExpressionContextDescription getExpressionContextDescription() {
		for (final CodeElementExtractor.ElementDescription containerDescription : getCodeElementExtractor().getTopElements(
				getGrammar(), getCodeBuilderConfig())) {
			final AbstractRule rule = getMemberRule(containerDescription);
			if (rule != null) {
				final Pattern fieldTypePattern = Pattern.compile(getExpressionConfig().getExpressionFieldTypenamePattern());
				final ExpressionContextDescription description = getCodeElementExtractor().visitMemberElements(
						containerDescription, rule, null,
					(it, grammarContainer, memberContainer, classifier) -> {
						if (fieldTypePattern.matcher(classifier.getName()).find()) {
							final Assignment expressionAssignment = findAssignmentFromTerminalPattern(
									memberContainer,
									getExpressionConfig().getExpressionGrammarPattern());
							final CodeElementExtractor.ElementDescription memberDescription =
									it.newElementDescription(classifier.getName(), memberContainer,
											classifier, XExpression.class);
							return new ExpressionContextDescription(
									containerDescription,
									memberDescription,
									ensureContainerKeyword(containerDescription.getGrammarComponent()),
									ensureFieldDeclarationKeyword(memberDescription),
									expressionAssignment);
						}
						return null;
					},
					null);
				if (description != null) {
					return description;
				}
			}
		}
		return null;
	}
protected ExpressionContextDescription getExpressionContextDescription ( ) { for ( final CodeElementExtractor . ElementDescription containerDescription : getCodeElementExtractor ( ) . getTopElements ( getGrammar ( ) , getCodeBuilderConfig ( ) ) ) { final AbstractRule rule = getMemberRule ( containerDescription ) ; if ( rule != null ) { final Pattern fieldTypePattern = Pattern . compile ( getExpressionConfig ( ) . getExpressionFieldTypenamePattern ( ) ) ; final ExpressionContextDescription description = getCodeElementExtractor ( ) . visitMemberElements ( containerDescription , rule , null , ( it , grammarContainer , memberContainer , classifier ) -> { if ( fieldTypePattern . matcher ( classifier . getName ( ) ) . find ( ) ) { final Assignment expressionAssignment = findAssignmentFromTerminalPattern ( memberContainer , getExpressionConfig ( ) . getExpressionGrammarPattern ( ) ) ; final CodeElementExtractor . ElementDescription memberDescription = it . newElementDescription ( classifier . getName ( ) , memberContainer , classifier , XExpression . class ) ; return new ExpressionContextDescription ( containerDescription , memberDescription , ensureContainerKeyword ( containerDescription . getGrammarComponent ( ) ) , ensureFieldDeclarationKeyword ( memberDescription ) , expressionAssignment ) ; } return null ; } , null ) ; if ( description != null ) { return description ; } } } return null ; }
Replies the description of the expression context.

@return the description.