Revert "updating getVertices; addVertex; isVertex; degree"

This reverts commit c7aebc522671658f7d435ac361d7ed5f21de43fb.
Revert "Revert "updating getVertices; addVertex; isVertex; degree""

This reverts commit 213e07dfef80c143d3f2a0d7e5a0bea5894e70a4.
Revert "Revert "Revert "updating getVertices; addVertex; isVertex; degree"""

This reverts commit b7e14a1039c533812bcf1d7cb852368962762086.
Revert "Revert "Revert "Revert "updating getVertices; addVertex; isVertex; degree""""

This reverts commit e2a8a986fd58c3d911e503a82dbf8a43b77b939b.
Revert "Revert "Revert "Revert "Revert "updating getVertices; addVertex; isVertex; degree"""""

This reverts commit 7fda8961926b2d6d35858a2aa81a06ee56593b56.
FIXED:: All good