AI-generated Key Takeaways
-  The Lock service in Apps Script prevents concurrent access to sections of code, useful for managing shared resources and preventing collisions. 
-  The LockService class provides methods to get different types of locks: document, script, and user. 
-  The Lock class represents a mutual-exclusion lock and includes methods to check if a lock is acquired, release a lock, and attempt to acquire a lock with or without timing out. 
This service allows scripts to prevent concurrent access to sections of code. This can be useful when you have multiple users or processes modifying a shared resource and want to prevent collisions.
Classes
| Name | Brief description | 
|---|---|
|  Lock 
 | A representation of a mutual-exclusion lock. | 
|  Lock  | Prevents concurrent access to sections of code. | 
  Lock 
 
 
 Methods
| Method | Return type | Brief description | 
|---|---|---|
| Boolean | Returns true if the lock was acquired. | |
| void | Releases the lock, allowing other processes waiting on the lock to continue. | |
| Boolean | Attempts to acquire the lock, timing out after the provided number of milliseconds. | |
| void | Attempts to acquire the lock, timing out with an exception after the provided number of milliseconds. | 
  Lock  
 
 Methods
| Method | Return type | Brief description | 
|---|---|---|
|  Lock 
 | Gets a lock that prevents any user of the current document from concurrently running a section of code. | |
|  Lock 
 | Gets a lock that prevents any user from concurrently running a section of code. | |
|  Lock 
 | Gets a lock that prevents the current user from concurrently running a section of code. | 

