Missing deserializer for type (Klass) "Object"

Description

I can generate a mostly functional client, but I need to monkey patch the generated class to fix a missing deserializer for type "Object".

There is a deserializer for "object" lower case, which works fine, so I have to believe that it's simply a case of case confusion.

I resorted to this monkey-patch of the generated app_api class:

app_api.api_client.NATIVE_TYPES_MAPPING['Object'] =\
 app_api.api_client.NATIVE_TYPES_MAPPING['object']

Not sure where the fault lies exactly, I didn't completely follow the deserializer mapping logic.

Swagger-codegen version

❯ swagger-codegen version
2.3.1

Have not tried any other version, this is a new project.

Swagger declaration file content or url

This is a snippet of the swagger 1.2 API file.

        "Application": {
            "properties": {
                "globalState": {
                    "type": "Object"
                },
        }

Command line used for generation

	swagger-codegen generate \
		-i app.json \
		-l python \
		-o lib

Steps to reproduce

Upon receipt of a response containing the above "globalState" Object, which is a json string,

Suggest a fix/enhancement

Make the NATIVE_TYPES_MAPPING comparison case insensitive?

Here's a pic of the specific failure point:

Note the object vs Object discrepancy.

Start with the generated lib/app_api/api_client.py and inspect how response deserialization looks up Object versus object in NATIVE_TYPES_MAPPING. Reproduce it with the shown swagger-codegen generate command and app.json snippet; done means a Python client can deserialize the Object response without the monkey patch.