def clone_attribute(cls,
attr: Attr,
restrictions: Restrictions,
prefix: Optional[str] = None) -> Attr:
"""
Clone the given attribute and merge its restrictions with the given
instance.
Prepend the given namespace prefix to the attribute name if
available.
"""
clone = attr.clone()
clone.restrictions.merge(restrictions)
if prefix:
for attr_type in clone.types:
if not attr_type.native and attr_type.name.find(":") == -1:
attr_type.name = f"{prefix}:{attr_type.name}"
return clone
def clone_attribute(cls, attr: Attr, restrictions: Restrictions) -> Attr:
"""Clone the given attribute and merge its restrictions with the given
instance."""
clone = attr.clone()
clone.restrictions.merge(restrictions)
return clone