new findValue(filter) → {Operation}
    Fetch a uuid key given a condition
    Parameters:
| Name | Type | Description | 
|---|---|---|
filter | 
            
            object | A filter object with the lookup table, a uuid and the condition | 
- Source:
 
Returns:
- Type
 - Operation
 
Example
findValue({
   uuid: 'id',
   relation: 'users',
   where: { first_name: 'Mamadou' },
   operator: { first_name: 'like' }
 })