| ## `unset_variable()` | |
| `unset_variable()` can be used to unset a variable. Reading a variable after | |
| calling `unset_variable()` will raise an exception unless the variable is set | |
| again. | |
| ```meson | |
| # tests/meson.build | |
| tests = ['test1', 'test2'] | |
| # ... | |
| unset_variable('tests') | |
| # tests is no longer usable until it is set again | |
| ``` |