code: public ServiceFuture<RoleAssignmentInner> createByIdAsync(String roleAssignmentId, RoleAssignmentProperties properties, final ServiceCallback<RoleAssignmentInner> serviceCallback) {
          return ServiceFuture.fromResponse(createByIdWithServiceResponseAsync(roleAssignmentId, properties), serviceCallback);
      }
docs: Creates a role assignment by ID.
  
  @param roleAssignmentId The fully qualified ID of the role assignment, including the scope, resource name and resource type. Use the format, /{scope}/providers/Microsoft.Authorization/roleAssignments/{roleAssignmentName}. Example: /subscriptions/{subId}/resourcegroups/{rgname}//providers/Microsoft.Authorization/roleAssignments/{roleAssignmentName}.
  @param properties Role assignment properties.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object