Method: Codec::Field#get_sub_field

Defined in:
lib/codec/field.rb

#get_sub_field(id) ⇒ Object 



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# File 'lib/codec/field.rb', line 119

def get_sub_field(id)
 sf_rec = get_sub_fields(id)
 if sf_rec.nil?
   return NilField.new
 elsif sf_rec.size > 1
   raise MultipleFieldError 
 else 
  return sf_rec.first
 end
end