Retrieving a copy of a type
# S3 method for types_env
$(x, name)# S3 method for types_env
[[(x, name)
The environment to request it from
The name of the type that is requested
Returns an object that is a copy of a type that was requested
The types are stored in the environment h5types. These types should not be accessed
directly. Therefor, the $-operator is overloaded to ensure that every type that is accessed is a copy of the
original type