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Support local functions that disallow capturing state from the enclosing scope.
Avoid unintentionally capturing state from the enclosing context.
Allow local functions to be used in scenarios where a static method is required.
A local function declared static cannot capture state from the enclosing scope.
As a result, locals, parameters, and this from the enclosing scope are not available within a static local function.
A static local function cannot reference instance members from an implicit or explicit this or base reference.
A static local function may reference static members from the enclosing scope.
A static local function may reference constant definitions from the enclosing scope.
nameof() in a static local function may reference locals, parameters, or this or base from the enclosing scope.
Accessibility rules for private members in the enclosing scope are the same for static and non-static local functions.
A static local function definition is emitted as a static method in metadata, even if only used in a delegate.
A non-static local function or lambda can capture state from an enclosing static local function but cannot capture state outside the enclosing static local function.
A static local function cannot be invoked in an expression tree.
A call to a local function is emitted as call rather than callvirt, regardless of whether the local function is static.
Overload resolution of a call within a local function not affected by whether the local function is static.
Removing the static modifier from a local function in a valid program does not change the meaning of the program.