Mastering Windows PowerShell Scripting - Third Edition

Methods

A method enacts a change to the object. This may be an internal change, such as opening a connection or stream, or it may take the object and change it into a different form as is the case with the ToString method.

The following class defines a simple ToString method that returns the value of the property:

class MyClass {    [String]$Property    MyClass() {        $this.Property = 'Hello world'    }    [String] ToString() {        return $this.Property    }}

When working with methods, and unlike functions in PowerShell, the return keyword is mandatory. Methods do not return output by default. An error will be raised if a method has an output type declared and it does not return output from each code path.

Methods can accept arguments in the same way as constructors. ...