Implement initialize and finalize for symbolic callbacks #709

Job	Run time
Tests (1, Downstream) / Tests - Downstream	15m 56s
Tests (1, Extended) / Tests - Extended	13m 45s
Tests (1, Extensions) / Tests - Extensions	23m 37s
Tests (1, InterfaceI) / Tests - InterfaceI	33m 28s
Tests (1, InterfaceII) / Tests - InterfaceII	22m 13s
Tests (1, RegressionI) / Tests - RegressionI	11m 0s
Tests (1, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	14m 59s
Tests (lts, Downstream) / Tests - Downstream	9m 10s
Tests (lts, Extended) / Tests - Extended	8m 26s
Tests (lts, Extensions) / Tests - Extensions	16m 44s
Tests (lts, InterfaceI) / Tests - InterfaceI	26m 4s
Tests (lts, InterfaceII) / Tests - InterfaceII	13m 44s
Tests (lts, RegressionI) / Tests - RegressionI	8m 10s
Tests (lts, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	8m 51s
Tests (pre, Downstream) / Tests - Downstream	15m 17s
Tests (pre, Extended) / Tests - Extended	14m 2s
Tests (pre, Extensions) / Tests - Extensions	22m 55s
Tests (pre, InterfaceI) / Tests - InterfaceI	32m 43s
Tests (pre, InterfaceII) / Tests - InterfaceII	23m 19s
Tests (pre, RegressionI) / Tests - RegressionI	10m 48s
Tests (pre, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	14m 52s
	6h 0m 3s

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