/// <summary>
 /// Returns the requested language constant.
 ///
 /// List of thrown errors:
 /// [AuthenticationError]()
 /// [AuthorizationError]()
 /// [HeaderError]()
 /// [InternalError]()
 /// [QuotaError]()
 /// [RequestError]()
 /// </summary>
 /// <param name="request">The request object containing all of the parameters for the API call.</param>
 /// <param name="callSettings">If not null, applies overrides to this RPC call.</param>
 /// <returns>A Task containing the RPC response.</returns>
 public override stt::Task <gagvr::LanguageConstant> GetLanguageConstantAsync(GetLanguageConstantRequest request, gaxgrpc::CallSettings callSettings = null)
 {
     Modify_GetLanguageConstantRequest(ref request, ref callSettings);
     return(_callGetLanguageConstant.Async(request, callSettings));
 }
 /// <summary>
 /// Returns the requested language constant.
 ///
 /// List of thrown errors:
 /// [AuthenticationError]()
 /// [AuthorizationError]()
 /// [HeaderError]()
 /// [InternalError]()
 /// [QuotaError]()
 /// [RequestError]()
 /// </summary>
 /// <param name="request">The request object containing all of the parameters for the API call.</param>
 /// <param name="cancellationToken">A <see cref="st::CancellationToken"/> to use for this RPC.</param>
 /// <returns>A Task containing the RPC response.</returns>
 public virtual stt::Task <gagvr::LanguageConstant> GetLanguageConstantAsync(GetLanguageConstantRequest request, st::CancellationToken cancellationToken) =>
 GetLanguageConstantAsync(request, gaxgrpc::CallSettings.FromCancellationToken(cancellationToken));
 partial void Modify_GetLanguageConstantRequest(ref GetLanguageConstantRequest request, ref gaxgrpc::CallSettings settings);
 /// <summary>
 /// Returns the requested language constant.
 ///
 /// List of thrown errors:
 /// [AuthenticationError]()
 /// [AuthorizationError]()
 /// [HeaderError]()
 /// [InternalError]()
 /// [QuotaError]()
 /// [RequestError]()
 /// </summary>
 /// <param name="request">The request object containing all of the parameters for the API call.</param>
 /// <param name="callSettings">If not null, applies overrides to this RPC call.</param>
 /// <returns>A Task containing the RPC response.</returns>
 public virtual stt::Task <gagvr::LanguageConstant> GetLanguageConstantAsync(GetLanguageConstantRequest request, gaxgrpc::CallSettings callSettings = null) =>
 throw new sys::NotImplementedException();