getMasterProxy() - Read master proxy of a proxy cluster

Function:	BcAdminProxyCluster.getMasterProxy() Returns the master proxy of the proxy cluster.
Parameters:	bc_object (BcObject of type BcObjectType.PROXY_CLUSTER) Proxy cluster whose master proxy is to be read.
Return:	(BcObject of type BcObjectType.PROXY). Master proxy of e proxy cluster
Exceptions:	BcObjectException, BcParameterException, BcToolException
Example:	... import BcAdminProxyCluster ... clstr_obj=BcAdminProxyCluster.getObject("BCCluster") m_proxy_obj=BcAdminProxyCluster.getMasterProxy(clstr_obj) ...