The method annotated with this annotation will be called to instantiate the mount content for the
MountSpec. The onCreateMountContent method can only take a
com.facebook.litho.ComponentContext as parameter. No props are allowed here.
The type of class used for the mount content. During normal compilation, it should never be
necessary to specify this explicitly. However, projects that use source-only ABI generation may
need to if the mounting type cannot be inferred from the return type.