# Functions
AddDefaultIndexes registers the default list of indexes.
ByClusterClassName adds the cluster class name index to the managers cache.
ByMachineNode adds the machine node name index to the managers cache.
ByMachineProviderID adds the machine providerID index to the managers cache.
NodeByProviderID contains the logic to index Nodes by ProviderID.
# Constants
ClusterClassNameField is used by the Cluster controller to index Clusters by ClusterClass name.
MachineNodeNameField is used by the Machine Controller to index Machines by Node name, and add a watch on Nodes.
MachineProviderIDField is used to index Machines by ProviderID.
NodeProviderIDField is used to index Nodes by ProviderID.