Jim Schubert 1c4e6b7d46 [csharp] Fix ToJson to work with composition and polymorphism (#7399)
* [csharp] Support composition on toJson

Previous implementation assumed specification only supports polymorphic
associations (via discrimator), although the code didn't seem to be
setup correctly for that in the first place. That is, the parent object
must define the discriminator (see
https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#models-with-polymorphism-support),
so NOT HAS parent AND HAS discriminator doesn't make sense.

From a C# perspective, base classes should have the method marked
virtual and derived classes should override the method. This supports
both composition and polymorphic definitions.

* [csharp] Regenerate integration test files

* [csharp] Regenerate samples

* [csharp] Regenerate security sample
2018-01-22 14:13:50 +08:00
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