Fix the comments of the binding cmd. (kubernetes-retired#2611)

cmd/svcat/binding/bind_cmd.go

@@ -94,6 +94,7 @@ func NewBindCmd(cxt *command.Context) *cobra.Command {
 	return cmd
 }
 
+// Validate checks that the required arguments have been provided
 func (c *bindCmd) Validate(args []string) error {
 	if len(args) == 0 {
 		return fmt.Errorf("an instance name is required")
@@ -126,6 +127,8 @@ func (c *bindCmd) Validate(args []string) error {
 	return nil
 }
 
+// Run creates the binding.
+// An error returned when failed.
 func (c *bindCmd) Run() error {
 	return c.bind()
 }

cmd/svcat/binding/describe_cmd.go

@@ -51,6 +51,7 @@ func NewDescribeCmd(cxt *command.Context) *cobra.Command {
 	return cmd
 }
 
+// Validate checks that the required arguments have been provided
 func (c *describeCmd) Validate(args []string) error {
 	if len(args) == 0 {
 		return fmt.Errorf("a binding name is required")
@@ -60,6 +61,7 @@ func (c *describeCmd) Validate(args []string) error {
 	return nil
 }
 
+// Run print the secret of a binding which retrieved by name and namespace.
 func (c *describeCmd) Run() error {
 	return c.describe()
 }

cmd/svcat/binding/get_cmd.go

@@ -53,6 +53,7 @@ func NewGetCmd(cxt *command.Context) *cobra.Command {
 	return cmd
 }
 
+// Validate checks that the required arguments have been provided
 func (c *getCmd) Validate(args []string) error {
 	if len(args) > 0 {
 		c.name = args[0]
@@ -61,6 +62,8 @@ func (c *getCmd) Validate(args []string) error {
 	return nil
 }
 
+// Run get all bindings when the name of the getcmd is not empty,
+// otherwise get single.
 func (c *getCmd) Run() error {
 	if c.name == "" {
 		return c.getAll()

cmd/svcat/binding/unbind_cmd.go

@@ -87,6 +87,7 @@ func NewUnbindCmd(cxt *command.Context) *cobra.Command {
 	return cmd
 }
 
+// Validate checks that the required arguments have been provided
 func (c *unbindCmd) Validate(args []string) error {
 	if len(args) == 0 {
 		if len(c.bindingNames) == 0 {
@@ -99,6 +100,7 @@ func (c *unbindCmd) Validate(args []string) error {
 	return nil
 }
 
+// Run delete bindings by the name of the instance.
 func (c *unbindCmd) Run() error {
 	// Indicates an error occurred and that a non-zero exit code should be used
 	var hasErrors bool