Exposes the main entry point of all ATC APIs.
Declaration Syntax
public interface IMechanicalExtAPI
Table 140: Members
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                 Method  | LockPrePostLicense() | 
                 Locks the license used by the PRE/POST application.  | 
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                 Method  | UnlockPrePostLicense() | 
                 R Unlocks the license used by the PRE/POST application. This is required if you want to manually launch the Ansys solver. You must relock the license after its use. If you don't relock the license, the PRE/POST application will be in read-only mode.  |