chore(internal): codegen related update

Author: stainless-app[bot]

internal/paramutil/sentinel.go

@@ -0,0 +1,31 @@
+package paramutil
+
+import (
+	"github.com/anthropics/anthropic-sdk-go/internal/encoding/json/sentinel"
+)
+
+// NullPtr returns a pointer to the zero value of the type T.
+// When used with [MarshalObject] or [MarshalUnion], it will be marshaled as null.
+//
+// It is unspecified behavior to mutate the value pointed to by the returned pointer.
+func NullPtr[T any]() *T {
+	return sentinel.NullPtr[T]()
+}
+
+// IsNullPtr returns true if the pointer was created by [NullPtr].
+func IsNullPtr[T any](ptr *T) bool {
+	return sentinel.IsNullPtr(ptr)
+}
+
+// NullSlice returns a non-nil slice with a length of 0.
+// When used with [MarshalObject] or [MarshalUnion], it will be marshaled as null.
+//
+// It is undefined behavior to mutate the slice returned by [NullSlice].
+func NullSlice[T any]() []T {
+	return sentinel.NullSlice[T]()
+}
+
+// IsNullSlice returns true if the slice was created by [NullSlice].
+func IsNullSlice[T any](slice []T) bool {
+	return sentinel.IsNullSlice(slice)
+}