This is a follow up to Use and Modify.

To make it even easier to work with your dinosaur size estimation functions you decide to create a function that lets you specify which dinosaur group you need to estimate the size of by name and then have the function automatically choose the right parameters.

Create a new function `get_mass_from_length_by_name()`

that takes two arguments,
the `length`

and the name of the dinosaur group. Inside this function use
`if`

/`else if`

/`else`

statements to check to see if the name is one of the
following values and if so set `a`

and `b`

to the appropriate values.

*Stegosauria*:`a`

=`10.95`

and`b`

=`2.64`

(Seebacher 2001).*Theropoda*:`a`

=`0.73`

and`b`

=`3.63`

(Seebacher 2001).*Sauropoda*:`a`

=`214.44`

and`b`

=`1.46`

(Seebacher 2001).

Once the function has assigned `a`

and `b`

have it run `get_mass_from_length()`

with the appropriate values and return the estimated mass.

Run the function for:

- A
*Stegosauria*that is 10 meters long. - A
*Theropoda*that is 8 meters long. - A
*Sauropoda*that is 12 meters long.

*Challenge (optional)*: If the name doesn’t match any of these values have the
function return `NA`

and print out a message that it doesn’t know how to convert
that group.