<put algortithm description here>
<put parameter description here>
Options:
Default: 0
<put parameter description here>
Default: 315.0
<put parameter description here>
Default: 45.0
<put parameter description here>
Default: 4.0
processing.runalg('saga:analyticalhillshading', elevation, method, azimuth, declination, exaggeration, shade)