data = (
{
  class = "mpdf_harness";
  mpdf = {
    class = "mgamma";
    beta = [ 1.5, 1.7 ];
    k = 1.0;
    rv : 
    {
      class = "RV";
      names = ( "b" );
    };
    rvc : 
    {
      class = "RV";
      names = ( "a" );
    };
  };
  cond = [ 1.5, 1.7 ];
  mean = [ 1.5, 1.7 ];
  R = ( "matrix", 2, 2, [ 2.25, 0.0, 0.0, 2.89 ] );
  variance = [ 2.25, 2.89];
  tolerance = 0.4;
} );