Checks if the matcher will match all of the keys in a given namespace.
This will always return TRUE if a wildcard character is in use (e.g. if
matcher was created with "standard::*" and ns is "standard", or if matcher was created
using "*" and namespace is anything.)
TODO: this is awkwardly worded.
Checks if the matcher will match all of the keys in a given namespace. This will always return TRUE if a wildcard character is in use (e.g. if matcher was created with "standard::*" and ns is "standard", or if matcher was created using "*" and namespace is anything.) TODO: this is awkwardly worded.