Builds the Metadata instance.
Returns the immutable version of this map.
Returns the immutable version of this map. Used for java interop.
Puts a Boolean.
Puts a Boolean array.
Puts a Double.
Puts a Double array.
Puts a Long.
Puts a Long array.
Puts a Metadata.
Puts a Metadata array.
Puts a null.
Puts a String.
Puts a String array.
Include the content of an existing Metadata instance.
:: DeveloperApi ::
Builder for Metadata. If there is a key collision, the latter will overwrite the former.