[ModelicaSystemBase] define parse_om_version() as staticmethod

Author: syntron

OMPython/ModelicaSystem.py

@@ -1026,8 +1026,12 @@ def getOptimizationOptions(
 
         raise ModelicaSystemError("Unhandled input for getOptimizationOptions()")
 
-    def _parse_om_version(self, version: str) -> tuple[int, int, int]:
-        match = re.search(r"v?(\d+)\.(\d+)\.(\d+)", version)
+    @staticmethod
+    def _parse_om_version(version: str) -> tuple[int, int, int]:
+        """
+        Evaluate an OMC version string and return a tuple of (epoch, major, minor).
+        """
+        match = re.search(pattern=r"v?(\d+)\.(\d+)\.(\d+)", string=version)
         if not match:
             raise ValueError(f"Version not found in: {version}")
         major, minor, patch = map(int, match.groups())