How to use

convertListToMap

method

in

com.google.protobuf.MapField

/** Gets a mutable Map view of this MapField. */
public Map<K, V> getMutableMap() {
 if (mode != StorageMode.MAP) {
  if (mode == StorageMode.LIST) {
   mapData = convertListToMap(listData);
  }
  listData = null;
  mode = StorageMode.MAP;
 }
 return mapData;
}

/** Returns the content of this MapField as a read-only Map. */
public Map<K, V> getMap() {
 if (mode == StorageMode.LIST) {
  synchronized (this) {
   if (mode == StorageMode.LIST) {
    mapData = convertListToMap(listData);
    mode = StorageMode.BOTH;
   }
  }
 }
 return Collections.unmodifiableMap(mapData);
}

/** Gets a mutable Map view of this MapField. */
public Map<K, V> getMutableMap() {
 if (mode != StorageMode.MAP) {
  if (mode == StorageMode.LIST) {
   mapData = convertListToMap(listData);
  }
  listData = null;
  mode = StorageMode.MAP;
 }
 return mapData;
}

/** Returns the content of this MapField as a read-only Map. */
public Map<K, V> getMap() {
 if (mode == StorageMode.LIST) {
  synchronized (this) {
   if (mode == StorageMode.LIST) {
    mapData = convertListToMap(listData);
    mode = StorageMode.BOTH;
   }
  }
 }
 return Collections.unmodifiableMap(mapData);
}