First, because it's generally not what you want to do, so this is likely to cause confusion, users picking the simplest method and only later realizing they are querying all entities.

Second, because you can easily achieve the same by calling search( Object.class ).

And third, because the signature search() may prove useful for another purpose, later: returning a search target builder with more advanced options. Among the options we might offer is the ability to target "dynamic maps" entities, in which case we need to refer to entities by their name instead of a class.