What relevance does Hickman have to local government and planning law in Australia?What is the common law origin of this?

LOCAL GOVERNMENT LAW

Consider Bushfire Survivors for Climate Action Inc v Environmental Protection Authority  NSWLEC 92

Outline the:

Relevant facts
Issue(s)
Relevant Finding(s)
Decision
Relevance to planning law in NSW.

Consider Peabody Pastoral Holdings Pty Ltd v Mid-Western Regional Council . NSWLEC 86

Outline the:
Relevant facts
Issue(s)
Decision
Relevance to planning law in NSW

Consider Queanbeyan City Council v ACTEW Corporation Ltd [2011] HCA 40
Outline the:

Relevant facts
Issue(s)
Decision
What the numerous interventions indicate.

4. The Hickman Principle
With regard to the Hickman Principle or Hickman Approach:
What is the common law origin of this?
What are the key elements?
b) What relevance does Hickman have to local government and planning law in Australia?
Identify as examples at least two statutory references