Multiple joins in a from clause

[bnhardy]

Looking to add multiple join statements at varying points in a code block.

let mut query = xql::select(["*"]);
query = query.from(xql::join(...));
if true {
    query = query.from(xql::join(...));
}

The problem is that the two joins are now comma separated. What is the proper way of building the following statement by adding the second join later on in the code block?:

"SELECT * FROM person JOIN employee ON person.person_id = employee.person_id JOIN employee_team ON employee.employee_id = employee_team.employee_id"