demo/amd/rjs/output/unified/plain-precompiled-build.js
function invokeKnownHelper(paramSize, name) {
	    var helper = this.setupHelper(paramSize, name);
	    this.push(this.source.functionCall(helper.name, 'call', helper.callParams));
	  }
function invokeKnownHelper(paramSize, name) {
	    var helper = this.setupHelper(paramSize, name);
	    this.push(this.source.functionCall(helper.name, 'call', helper.callParams));
	  }
[invokeKnownHelper]  On stack, before: hash, inverse, program, params..., ... On stack, after: result of helper invocation  This operation is used when the helper is known to exist, so a `helperMissing` fallback is not required.