Akhil Sharma focused on improving API stability in the PyBaMM repository by introducing a structured deprecation path for private methods. Working primarily in Python, Akhil addressed a bug where set_parameters and set_up_and_parameterise_experiment were made private without warning, which risked breaking downstream code. By implementing deprecation warnings and maintaining backward compatibility, Akhil ensured that existing users could transition smoothly to the updated API. This work involved careful code refactoring and clear documentation, reducing migration risk and supporting future API evolution. The depth of the contribution lay in balancing immediate bug resolution with long-term maintainability and a better developer experience.