Function grpcurl 

pub fn grpcurl<T: Into<Uri>>(
    includes: &[String],
    uri: T,
    message: &str,
    method_desc: &MethodDescriptor,
    metadata: &HashMap<String, String>,
) -> String

Generate a grpcurl command as a string for sending a gRPC request.

This function constructs a grpcurl command that can be used to send a gRPC request to a specified gRPC server. The generated command includes information such as include directories, URI, request message in JSON format, method descriptor, and metadata headers.

Parameters

• includes: A list of include directories used to locate .proto files.
• uri: The address URI of the gRPC server (e.g., “localhost:50051”).
• message: The request data in JSON format.
• method_desc: The method descriptor for the gRPC method.
• metadata: Key-value metadata headers to be included in the request.