kotlin-stdlib / kotlin.native.concurrent / MutableData / append append Native 1.3 fun append ( data : MutableData ) (source) Appends data to the buffer. Native 1.3 fun append ( data : ByteArray , fromIndex : Int = 0 , toIndex : Int = data.size ) (source) Appends byte array to the buffer. Native 1.3 fun append ( data : COpaquePointer ? , count : Int ) (source) Appends C data to the buffer, if data is null or count is non-positive - return.