AT:

• I can use the `task.variables` object to have access to the variables of the task through getters (get and getTyped).
• I can call set(key, value) to set the value of variable corresponding to key. The type of the variable should be adjusted accordingly.
• I can call setTyped(key, typedValue) to set typed value to variable corresponding to key.
• I can call setAll(values) to set multiples values at once.
• I can call setAllTyped(typedValues) to set multiple typed values at once.