Add idiomatic documentation to Go, Java, Python, and Rust clients

clients/go/mxgateway/options.go

@@ -11,16 +11,29 @@ import (
 
 // Options configures gateway connections.
 type Options struct {
-	Endpoint             string
-	APIKey               string
-	Plaintext            bool
-	CACertFile           string
-	ServerNameOverride   string
-	DialTimeout          time.Duration
-	CallTimeout          time.Duration
-	TLSConfig            *tls.Config
+	// Endpoint is the gateway host:port address to dial.
+	Endpoint string
+	// APIKey is the bearer token attached to outgoing gRPC metadata.
+	APIKey string
+	// Plaintext disables TLS and uses insecure credentials when true.
+	Plaintext bool
+	// CACertFile points to a PEM file used to verify the gateway certificate.
+	CACertFile string
+	// ServerNameOverride overrides the TLS SNI/SAN name presented to the gateway.
+	ServerNameOverride string
+	// DialTimeout bounds the blocking Dial; zero applies a built-in default.
+	DialTimeout time.Duration
+	// CallTimeout bounds each unary RPC; zero applies a built-in default and
+	// negative disables the bound entirely.
+	CallTimeout time.Duration
+	// TLSConfig supplies a custom TLS configuration; takes precedence over
+	// CACertFile when TransportCredentials is unset.
+	TLSConfig *tls.Config
+	// TransportCredentials, when non-nil, overrides every other transport-level
+	// option and is used as-is.
 	TransportCredentials credentials.TransportCredentials
-	DialOptions          []grpc.DialOption
+	// DialOptions are appended to the gRPC dial options after the defaults.
+	DialOptions []grpc.DialOption
 }
 
 // RedactedAPIKey returns a display-safe representation of the configured API