static RegisterUser()
{
_pipelineProcessor = PipelineProcessor
.DefineFor <FunctionParams>()
.NextInPipeline(() => new ExceptionHandlingPipelineBehavior <FunctionParams>())
.NextInPipeline(() => new JsonDeserializationPipelineBehavior <FunctionParams>())
.NextInPipeline(() => new FluentValidationPipelineBehavior <FunctionParams>())
.Build();
}