code: function getPaddedArrayBuffer(arrayBuffer, paddingByte) {
        paddingByte = paddingByte || 0;
  
        var paddedLength = getPaddedBufferSize(arrayBuffer.byteLength);
  
        if (paddedLength !== arrayBuffer.byteLength) {
          var array = new Uint8Array(paddedLength);
          array.set(new Uint8Array(arrayBuffer));
  
          if (paddingByte !== 0) {
            for (var i = arrayBuffer.byteLength; i < paddedLength; i++) {
              array[i] = paddingByte;
            }
          }
  
          return array.buffer;
        }
  
        return arrayBuffer;
      }
docs: Returns a buffer aligned to 4-byte boundary.
  
  @param {ArrayBuffer} arrayBuffer Buffer to pad
  @param {Integer} paddingByte (Optional)
  @returns {ArrayBuffer} The same buffer if it's already aligned to 4-byte boundary or a new buffer