[Home](./index.md) > [kibana-plugin-plugins-expressions-server](./kibana-plugin-plugins-expressions-server.md) > [ExpressionAstFunctionBuilder](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.md) > [name](./kibana-plugin-plugins-expressions-server.expressionastfunctionbuilder.name.md) ## ExpressionAstFunctionBuilder.name property Name of this expression function. Signature: ```typescript name: InferFunctionDefinition['name']; ```