callMethod abstract method
Searches the method named name
in the all the TouchBar items
and execute it.
It returns true if a method of the given name
was found and executed.
The name
has the value of Identifier.toString().
It is not a humand readable name nor the name of the property that it
holds.
The arguments
can be any value.
This method should not be called manually.
Implementation
bool callMethod(String name, dynamic arguments);