The Commonwealth Court was presented with an appeal from a validity challenge asserting “apartments” were either excluded from the municipality, or the municipality failed to accommodate its fair share of multi-family housing. In determining that the challenge was appropriately dismissed, the court concluded that the economic infeasibility of a particular variation of a use did not render the entire use infeasible, and that zoned and actively used agricultural land could not be considered “undeveloped” when determining whether a municipality was underdeveloped.