CSharp plugin argument classes not created

Describe the bug There are not created argument classes when using c sharp plugin

To Reproduce Extremely simple. Just compare homepage of this project (default is typescript in yml file ) to this for example

overwrite: true schema: schema.graphql generates: RimacCmvdsClient.Models/Models.cs: plugins: - c-sharp config: namespaceName: e scalars: DateTime: DateTime

QuerySearchArgs is missing !

Sandbox has timeouts but reproducing this is trivial. Just on home page of this site use c-sharp plugin

1. My GraphQL schema:

scalar Date

schema {
  query: Query
}

type Query {
  me: User!
  user(id: ID!): User
  allUsers: [User]
  search(term: String!): [SearchResult!]!
  myChats: [Chat!]!
}

enum Role {
  USER,
  ADMIN,
}

interface Node {
  id: ID!
}

union SearchResult = User | Chat | ChatMessage

type User implements Node {
  id: ID!
  username: String!
  email: String!
  role: Role!
}

type Chat implements Node {
  id: ID!
  users: [User!]!
  messages: [ChatMessage!]!
}

type ChatMessage implements Node {
  id: ID!
  content: String!
  time: Date!
  user: User!
}

2. My GraphQL operations:

# Put your operations here

3. My codegen.yml config file:

overwrite: true
schema: schema.graphql
generates:
  RimacCmvdsClient.Models/Models.cs:
    plugins:
      - c-sharp
    config:
        namespaceName: e
        scalars:
            DateTime: DateTime

Expected behavior Created argument classes for arguments like in typescript plugin (classes with Args sufix)

Environment:

• OS:
• @graphql-codegen/...:
• NodeJS: 14.15.4

Additional context