graphql introspection

    query IntrospectionQuery {
      __schema {

        queryType { name }
        mutationType { name }
        subscriptionType { name }
        types {
          ...FullType
        }
        directives {
          name
          description

          locations
          args {
            ...InputValue
          }
        }
      }
    }

    fragment FullType ON __Type {
      kind
      name
      description
      FIELDS(includeDeprecated: TRUE) {
        name
        description
        args {
          ...InputValue
        }
        TYPE {
          ...TypeRef
        }
        isDeprecated
        deprecationReason
      }
      inputFields {
        ...InputValue
      }
      interfaces {
        ...TypeRef
      }
      enumValues(includeDeprecated: TRUE) {
        name
        description
        isDeprecated
        deprecationReason
      }
      possibleTypes {
        ...TypeRef
      }
    }

    fragment InputValue ON __InputValue {
      name
      description
      TYPE { ...TypeRef }
      defaultValue
    }

    fragment TypeRef ON __Type {
      kind
      name
      ofType {
        kind
        name
        ofType {
          kind
          name
          ofType {
            kind
            name
            ofType {
              kind
              name
              ofType {
                kind
                name
                ofType {
                  kind
                  name
                  ofType {
                    kind
                    name
                  }
                }
              }
            }
          }
        }
      }
    }