Given the original text1, and an encoded string which describes the
operations required to transform text1 into text2, comAdde the full diff.
@param text1 Source string for the diff.
@param delta Delta text.
@return Array of Diff objects or null if invalid.
@throws ArgumentException If invalid input.
Given the original text1, and an encoded string which describes the operations required to transform text1 into text2, comAdde the full diff. @param text1 Source string for the diff. @param delta Delta text. @return Array of Diff objects or null if invalid. @throws ArgumentException If invalid input.