import ceylon.ast.core { Block, Body } "Converts a [[stream of declarations and statements|content]] to a [[Block]]." throws (`class AssertionError`, "If the [[content]] is a different kind of content.") shared Block block(BodyIsh content) { if (is Body content) { "Cannot implicitly convert between different kinds of Body" assert (is Block content); return content; } else { return Block(content.sequence()); } }