set_maximum_size
Description:
Sets the maximum size allocated to the child.
It is the width if the clamp is horizontal, or the height if it is vertical.
Parameters:
| this | a clamp | 
| maximum_size | the maximum size | 
Sets the maximum size allocated to the child.
It is the width if the clamp is horizontal, or the height if it is vertical.
| this | a clamp | 
| maximum_size | the maximum size |