},
					},
				},
				"extra": "thing",
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if gotResult := buildNestedMap(tt.args.flatMap); !reflect.DeepEqual(gotResult, tt.wantResult) {
				t.Errorf("buildNestedMap() = %v, want %v", gotResult, tt.wantResult)
			}
		})
	}

	flags.VisitAll(func(f *pflag.Flag) {
		if strings.Contains(f.Name, ".") {
			deepkeys[f.Name] = "--" + f.Name
		}
	})

	if len(deepkeys) < 1 {
		return nil
	}

	deepConfig := buildNestedMap(deepkeys)
	strb, err := yaml.Marshal(deepConfig)
	if err != nil {
		return err
	}
	str := string(strb)

	g.emit("<p/>Accepts deep config files, like:")