code: func Header(name string, args ...interface{}) {
  	if _, ok := dslengine.CurrentDefinition().(*design.SecuritySchemeDefinition); ok {
  		if len(args) != 0 {
  			dslengine.ReportError("do not specify args")
  			return
  		}
  		inHeader(name)
  		return
  	}
  
  	Attribute(name, args...)
  }
docs: // Header can be used in: Headers, APIKeySecurity, JWTSecurity
  //
  // Header is an alias of Attribute for the most part.
  //
  // Within an APIKeySecurity or JWTSecurity definition, Header
  // defines that an implementation must check the given header to get
  // the API Key.  In this case, no `args` parameter is necessary.