Specifies that a configuration property represents an HTTP endpoint URL for an HttpClient.
Used by the EasyAF configuration system to automatically register HttpClients with their base addresses.
Gets or sets the name of the property that contains the HttpClient name to be registered.
This property should contain the string value that will be used as the named HttpClient identifier.
This attribute enables automatic HttpClient registration by linking configuration properties
that contain URLs to the corresponding HttpClient name properties. The configuration system
uses this information to set up named HttpClient instances with appropriate base addresses.