Metagraph naming conventions
          Metagraph names must conform to these rules:
         
         - The name must be unique. The name is case-preserving, but case-insensitive. If MyMetagraph exists, you cannot create mymetagraph.
 - Metagraph names can only contain these characters:
           
- English letters A-Z and a-z
 - Numbers 0-9
 - Blank space
             Note: Leading, trailing, and multiple consecutive blank spaces in the middle of the metagraph name are not allowed and are removed prior to saving the metagraph.
 
 - The maximum length is 255 characters.