[Home](./index.md) > [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) > [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) > [args](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.args.md) ## ExpressionFunctionDefinition.args property Specification of arguments that function supports. This list will also be used for autocomplete functionality when your function is being edited. Signature: ```typescript args: { [key in keyof Arguments]: ArgumentType; }; ```