pytype.abstract.mixin.LazyMembers

Use lazy loading for the attributes of the represented value. A class that mixes in LazyMembers must: * pass init_mixin a dict of the raw attribute values. This will be stored as the `_member_map` attribute. * Define a `members` attribute to be a name->attribute dictionary. * Implement a `_convert_member` method that processes a raw attribute into an abstract value to store in `members`. When accessing an attribute on a lazy value, the caller must first call `load_lazy_attribute(name)` to ensure the attribute is loaded. Calling `_convert_member` directly should be avoided! Doing so will create multiple copies of the same attribute, leading to subtle bugs.