ifElseChain: rewrite if-else to switch statement (gocritic)

assignOp: replace `desc.numArgs = desc.numArgs - 1` with `desc.numArgs--` (gocritic)

if-return: redundant if ...; err != nil check, just return error instead. (revive)

if-return: redundant if ...; err != nil check, just return error instead. (revive)

indent-error-flow: if block ends with a return statement, so drop this else and outdent its block (revive)

indent-error-flow: if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary) (revive)

unused-parameter: parameter 'args' seems to be unused, consider removing or renaming it as _ (revive)

increment-decrement: should replace argIndexOffset -= 1 with argIndexOffset-- (revive)

var-declaration: should omit type []string from declaration of var nonAttachableFields; it will be inferred from the right-hand side (revive)