Fix for method help

Author: aherlihy

packages/shell-api/src/database.spec.ts

@@ -16,6 +16,10 @@ describe('Database', () => {
       expect(apiClass.help().shellApiType()).to.equal('Help');
       expect(apiClass.help.shellApiType()).to.equal('Help');
     });
+    it('calls help function for methods', () => {
+      expect(apiClass.runCommand.help().shellApiType()).to.equal('Help');
+      expect(apiClass.runCommand.help.shellApiType()).to.equal('Help');
+    });
   });
   describe('collections', () => {
     it('allows to get a collection as property if is not one of the existing methods', () => {

packages/shell-api/src/decorators.ts

@@ -81,13 +81,16 @@ export function shellApiClassDefault(constructor: Function): void {
     };
 
     const attributeHelpKeyPrefix = `${classHelpKeyPrefix}.attributes.${propertyName}`;
-    descriptor.value.help = {
+    const attrHelp = {
       help: `${attributeHelpKeyPrefix}.example`,
       docs: `${attributeHelpKeyPrefix}.link`,
       attr: [
         { description: `${attributeHelpKeyPrefix}.description` }
       ]
     };
+    const aHelp = new Help(attrHelp);
+    descriptor.value.help = (): Help => (aHelp);
+    Object.setPrototypeOf(descriptor.value.help, aHelp);
 
     classHelp.attr.push({
       name: propertyName,