1. A method of automatically generating sample code for an application programming interface (API) for payment processing in a payment network, the method comprising: detecting, by at least one processor, a change in acquirer processor-specific API data; updating, by the at least one processor, a backend generator according to the detected change in the acquirer processor-specific API data; reading, by the at least one processor, an acquirer processor-specific API enabling third party access to an acquirer processor's formats for payment processing in a payment network, using an acquirer processor-specific API reader; generating, by the at least one processor, the acquirer processor-specific API data using the acquirer processor-specific API reader, the acquirer processor-specific API data describing the acquirer processor's formats for payment processing in the payment network; passing, by the at least one processor, the acquirer processor-specific API data to a language-specific backend module; converting, by the at least one processor, the acquirer processor-specific API data into a format compatible with an output generator using the language-specific backend module; passing, by the at least one processor, the converted acquirer processor-specific API data and a language-specific template corresponding to the acquirer processor-specific API data to the output generator using the backend generator; and generating, by the at least one processor, language-specific sample code by the output generator using the converted acquirer processor-specific API data and the language-specific template corresponding to the acquirer processor-specific API data.