4895bfc9_Using_the_Data_Control_Palette__Description
[Name] Method [Used to Create...] Command components For methods that accept parameters: command components and parameterized forms [Description] 
Represents a custom method on the data control that may accept parameters, perform some action or business logic, and return single values or data collections. If the method is a get method of a Map and returns a value or a collection, a method return icon appears as a child under it. If a method requires a parameter, a folder appears under the method, which lists the required parameters. For more information about using methods that accept parameters, see Section 10.6, "Creating a Form or Table Using a Method that Takes Parameters".
5.2 Using the Data Control Palette
Description