Struct FilterField 

pub struct FilterField {
    pub name: &'static str,
    pub ty: &'static str,
    pub doc: &'static str,
    pub normalization: FieldNormalization,
}

One context field a capability’s filter: expression can match on.

Fields

name: &'static str

ty: &'static str

The operand’s shape in a filter comparison: string, number, or boolean.

doc: &'static str

One line on what the field carries.

normalization: FieldNormalization

How the runtime rewrites the value before the policy sees it.