| void | DmlSyntacticValidator. enterExternalFunctionDefExpression(DmlParser.ExternalFunctionDefExpressionContext ctx) | 
| void | DmlPreprocessor. enterExternalFunctionDefExpression(DmlParser.ExternalFunctionDefExpressionContext ctx) | 
| void | DmlListener. enterExternalFunctionDefExpression(DmlParser.ExternalFunctionDefExpressionContext ctx) | 
| void | DmlBaseListener. enterExternalFunctionDefExpression(DmlParser.ExternalFunctionDefExpressionContext ctx) | 
| void | DmlSyntacticValidator. exitExternalFunctionDefExpression(DmlParser.ExternalFunctionDefExpressionContext ctx) | 
| void | DmlPreprocessor. exitExternalFunctionDefExpression(DmlParser.ExternalFunctionDefExpressionContext ctx) | 
| void | DmlListener. exitExternalFunctionDefExpression(DmlParser.ExternalFunctionDefExpressionContext ctx) | 
| void | DmlBaseListener. exitExternalFunctionDefExpression(DmlParser.ExternalFunctionDefExpressionContext ctx) |