Replaced switch on string with if statement
Removed unnecessary try-catches
Removed unused generic on OrderRowBuilder
Removed generics from InvoiceFeeBuilder
Removed generics from ShippingFeeBuilder
Removed generics from FixedDiscountBuilder
Removed generics from RelativeDiscountBuilder
Optimized imports
Removed unused classes
Parameterized OrderBuilder at a few places
Introduced generic
Removed unused code
Renamed misnamed file
Renamed lowercase file
UTF problems fixed
Renamed files back