ReqEmail class 
 
    
  Convenience validator for required email fields.
It is the composition between Req and Email.
 
    
  
    
  
    Properties
    
        - 
  hashCode
  → int
  
- 
  The hash code for this object.
  no setterinherited 
- 
  runtimeType
  → Type
  
- 
  A representation of the runtime type of the object.
  no setterinherited 
 
    
  
    Methods
    
        - 
  call(String? input)
    → String?
  
  
- 
  Valid — returns null — if inputis a non-blank, well-formed email;
otherwise, returns the blank error message ifinputis null, or the
malformed error message ifinputis malformed.
- 
  noSuchMethod(Invocation invocation)
    → dynamic
  
  
- 
  Invoked when a nonexistent method or property is accessed.
  inherited 
- 
  toString()
    → String
  
  
- 
  A string representation of this object.
  inherited