Create a PostGIS function to remove small holes in a multipolygon

I need a PostGIS function to remove all rings smaller than a given area from a multipolygon geometry. Function IN : multipolygon geometry, maximal area in m2 Function OUT : multipolygon geometry Here is a similar function working for simple polygons, I need the same thing for a multipolygon: [login to view URL] Attached example : [login to view URL] / [login to view URL] If I apply the function to the [login to view URL] : UPDATE table SET geom = my_outer_function(geom, 100); I should get the same result as in after.shp.