Used for portion marking access requirements with a format of a
namespace-prefix followed by sets of key-value pairs. The '|'
character is used to separate the key-value pairs and the '^'
character is used to join keys with their values. Multiple
namespace-prefixed sets can be used.
For example:
- ntk:access="namespace1|key1^value1|key2^value1|key2^value2"
- ntk:access="namespace1|key1^value1 namespace2|key1^value1|key2^value2"
- ntk:access="namespace1|key1^value1|key2^val2 namespace1|key1^value3"