1 files changed, 29 insertions, 0 deletions
diff --git a/packages/sdk/go/internal/param/field.go b/packages/sdk/go/internal/param/field.go
new file mode 100644
index 000000000..4d0fd9c6f
--- /dev/null
+++ b/packages/sdk/go/internal/param/field.go
@@ -0,0 +1,29 @@
+package param
+
+import (
+	"fmt"
+)
+
+type FieldLike interface{ field() }
+
+// Field is a wrapper used for all values sent to the API,
+// to distinguish zero values from null or omitted fields.
+//
+// It also allows sending arbitrary deserializable values.
+//
+// To instantiate a Field, use the helpers exported from
+// the package root: `F()`, `Null()`, `Raw()`, etc.
+type Field[T any] struct {
+	FieldLike
+	Value   T
+	Null    bool
+	Present bool
+	Raw     any
+}
+
+func (f Field[T]) String() string {
+	if s, ok := any(f.Value).(fmt.Stringer); ok {
+		return s.String()
+	}
+	return fmt.Sprintf("%v", f.Value)
+}