Made DefaultNamespaces readonly.
Made DefaultNamespaces readonly.

kschecht/sarif-sdk,kschecht/sarif-sdk,Rolstenhouse/sarif-sdk,Rolstenhouse/sarif-sdk,Rolstenhouse/sarif-sdk,kschecht/sarif-sdk,kschecht/sarif-sdk,kschecht/sarif-sdk,Rolstenhouse/sarif-sdk,Rolstenhouse/sarif-sdk,kschecht/sarif-sdk,Rolstenhouse/sarif-sdk,kschecht/sarif-sdk,Rolstenhouse/sarif-sdk