Remove visibility limiter pub (crate) from Metadata (paritytech#162)

* Remove visibility limiter `pub (crate)`

* Run fmt

* Add comments

src/metadata.rs

@@ -93,10 +93,8 @@ impl Metadata {
  .ok_or(MetadataError::ModuleNotFound(name))
  }
 
- pub(crate) fn module_with_calls<S>(
- &self,
- name: S,
- ) -> Result<&ModuleWithCalls, MetadataError>
+ /// Returns `ModuleWithCalls`.
+ pub fn module_with_calls<S>(&self, name: S) -> Result<&ModuleWithCalls, MetadataError>
  where
  S: ToString,
  {
@@ -106,11 +104,13 @@ impl Metadata {
  .ok_or(MetadataError::ModuleNotFound(name))
  }
 
- pub(crate) fn modules_with_events(&self) -> impl Iterator<Item = &ModuleWithEvents> {
+ /// Returns Iterator of `ModuleWithEvents`.
+ pub fn modules_with_events(&self) -> impl Iterator<Item = &ModuleWithEvents> {
  self.modules_with_events.values()
  }
 
- pub(crate) fn module_with_events(
+ /// Returns `ModuleWithEvents`.
+ pub fn module_with_events(
  &self,
  module_index: u8,
  ) -> Result<&ModuleWithEvents, MetadataError> {
@@ -120,7 +120,8 @@ impl Metadata {
  .ok_or(MetadataError::ModuleIndexNotFound(module_index))
  }
 
- pub(crate) fn module_with_errors(
+ /// Returns `ModuleWithErrors`.
+ pub fn module_with_errors(
  &self,
  module_index: u8,
  ) -> Result<&ModuleWithErrors, MetadataError> {