"S3(S2(S1(a=1; b=2); c=3; d=4); e=5; f=6)",
new S3( 1, 2, 3, 4, 5, 6 ).toString() );
assertEquals(
"etch.tests.Inheritance$E1: a=1; b=2",
new E1( 1, 2 ).toString() );
assertEquals(
"etch.tests.Inheritance$E2: a=1; b=2; c=3; d=4",
new E2( 1, 2, 3, 4 ).toString() );