function() {
				this.context.aliases.blockHelperMissing = 'helpers.blockHelperMissing';

				var params = ["depth0"];
				this.setupParams(0, params);

				var current = this.topStack();
				params.splice(1, 0, current);

				this.pushSource("if (!" + this.lastHelper + ") { " + current + " = blockHelperMissing.call(" + params.join(", ") + "); }");
			}