Parser.parseTemplateAliasParameter

Parses a TemplateAliasParameter

$(GRAMMAR $(RULEDEF templateAliasParameter): $(LITERAL 'alias') $(RULE type)? $(LITERAL Identifier) ($(LITERAL ':') ($(RULE type) | $(RULE assignExpression)))? ($(LITERAL '=') ($(RULE type) | $(RULE assignExpression)))? ;)