Introduction of non compliant java field names

[tdltdl]

Recently a field is_anycast has been introduced. This is not in line with Java naming convention.
The field should be called boolean anycast and the getter should be boolean isAnycast()

Will not merge those changes with the ongoing PRs.

[tdltdl]

You probably want to use
@SerializedName("is_anycast")
private final boolean anycast;

and, to be backward compatible add a method boolean isAnycast() (while marking the getAnycast as deprecated and remove it for next major version) and apply the same for all other boolean fields that have a getXxx()
And I would recommend to also use PR for your own changes.