What do you understand by "Indian functionalism". Discuss with examples.

In medieval India, many of the buildings and monuments were created in haste, generally by breaking existing structures such as temples; and were devoid of any aesthetic flavour, expression and decoration. This was called Indian “functionalism”. Indo Islamic Monuments at Mandu are considered to have the feature of Indian functionalism. The monuments of Mandu generally lack the expression and decoration. The mosques at Mandu are of Arabian type, lacking even a minaret, and their hypostyle worship rooms and cloisters surrounding a courtyard are built continuously and homogeneously.