input_param_checker: Check Input Parameters
In mds: Medical Devices Surveillance

Verifies correct class and, optionally, verifies existence in a data frame

input_param_checker(
  x,
  check_class = NULL,
  check_names = NULL,
  null_ok = T,
  exclusions = NULL,
  max_length = NULL
)

`x`	Single object name, character, or vector of characters
`check_class`	Vector of correct classes in character format
`check_names`	Default: `NULL`. Optional data frame to check if `x` exists in the data frame.
`null_ok`	Default: `T`. Allow `x` to be `NULL`. If `x` is `NULL`, bypass checking.
`exclusions`	Default: `NULL`. Optional values that are excluded from checking in `check_names` (if it is not `NULL`).
`max_length`	Default: `NULL`. Optional maximum length of `x`. If `NULL`, no max length check will occur.