Specify default values for StreamTextOptions and streamText (#688)

+---
+"client-sdk-android": patch
+---
+
+Specify default values for StreamTextOptions and streamText

@@ -34,12 +34,12 @@ data class StreamTextOptions(
     val attributes: Map<String, String> = emptyMap(),
     val streamId: String = UUID.randomUUID().toString(),
     val destinationIdentities: List<Participant.Identity> = emptyList(),
-    val operationType: TextStreamInfo.OperationType,
+    val operationType: TextStreamInfo.OperationType = TextStreamInfo.OperationType.CREATE,
     val version: Int = 0,
     val attachedStreamIds: List<String> = emptyList(),
     val replyToStreamId: String? = null,
     /**
-     * The total exact size in bytes, if known.
+     * The total exact size in bytes when encoded to UTF-8, if known.
      */
     val totalSize: Long? = null,
 )

@@ -35,12 +35,12 @@ import javax.inject.Inject
 
 interface OutgoingDataStreamManager {
     /**
-     * Start sending a stream of text
+     * Start sending a stream of text. Call [TextStreamSender.close] when finished sending.
      */
-    suspend fun streamText(options: StreamTextOptions): TextStreamSender
+    suspend fun streamText(options: StreamTextOptions = StreamTextOptions()): TextStreamSender
 
     /**
-     * Start sending a stream of bytes
+     * Start sending a stream of bytes. Call [ByteStreamSender.close] when finished sending.
      */
     suspend fun streamBytes(options: StreamBytesOptions): ByteStreamSender
 }