MetadataHelper 1.75.0 API

```
public final class MetadataHelper

                    
```
Helper class for reading & writing metadata to parcels.
Metadata is written to a parcel as a single int for the number of name/value pairs, followed by the following pattern for each pair.
- name length (int)
- name (byte[])
- value length OR sentinel (int)
- value (byte[] OR Parcelable)
The sentinel int at the start of a value may indicate bad metadata. When this happens, no more data follows the sentinel.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public final class`	`MetadataHelper.ParcelableMetadataMarshaller`	A marshaller for passing parcelables in gRPC Metadata

Method Summary

Modifier and Type	Method	Description
`static void`	`writeMetadata(Parcel parcel, @Nullable() Metadata metadata)`	Write a Metadata instance to a Parcel.
`static Metadata`	`readMetadata(Parcel parcel, Attributes attributes)`	Read a Metadata instance from a Parcel.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - writeMetadata
```
 static void writeMetadata(Parcel parcel, @Nullable() Metadata metadata)
```
    Write a Metadata instance to a Parcel.
    
    Parameters:
    
    parcel - The Parcel to write to.
    
    metadata - The Metadata to write.
  - readMetadata
```
 static Metadata readMetadata(Parcel parcel, Attributes attributes)
```
    Read a Metadata instance from a Parcel.
    
    Parameters:
    
    parcel - The Parcel to read from.