“…In the past few decades, a wealth of methods have been developed to find these exact solutions of the nonlinear PDEs though it is rather difficult. Some of the most important methods are the inverse scattering method [1,2], Darboux and Bäcklund transformations [3,4], Hirota's bilinear method [4][5][6], Lie symmetry analysis [7][8][9][10][11][12][13][14][15][16][17], CK transformation method [18,19], and so on.…”