  Anisotropic flow is a sensitive probe of the initial conditions and the
transport properties of the Quark Gluon Plasma (QGP) produced in heavy-ion
collisions. In these proceedings, we present the first results of elliptic
($v_2$), triangular ($v_3$) and quadrangular flow ($v_4$) of charged particles
in Pb--Pb collisions at $\sqrt{s_{_{\rm NN}}}=$ 5.02 TeV with the ALICE
detector. In addition, the comparison of experimental measurements to various
theoretical calculations will be discussed. This provides a unique opportunity
to test the validity of the hydrodynamic picture and discriminates between
various possibilities for the temperature dependence of shear viscosity to
entropy density ratio of the produced QGP.
