config/src/main/java/org/springframework/security/config/annotation/web/configurers/JeeConfigurer.java
public JeeConfigurer<H> mappableAuthorities(String... mappableRoles) {
		this.mappableRoles.clear();
		for (String role : mappableRoles) {
			this.mappableRoles.add(role);
		}
		return this;
	}
public JeeConfigurer<H> mappableAuthorities(String... mappableRoles) {
		this.mappableRoles.clear();
		for (String role : mappableRoles) {
			this.mappableRoles.add(role);
		}
		return this;
	}
Specifies roles to use map from the {@link HttpServletRequest} to the
{@link UserDetails}. If {@link HttpServletRequest#isUserInRole(String)} returns
true, the role is added to the {@link UserDetails}. This method is the equivalent
of invoking {@link #mappableAuthorities(Set)}. Multiple invocations of
{@link #mappableAuthorities(String...)} will override previous invocations.

<p>
There are no default roles that are mapped.
</p>

@param mappableRoles the roles to attempt to map to the {@link UserDetails} (i.e.
"ROLE_USER", "ROLE_ADMIN", etc).
@return the {@link JeeConfigurer} for further customizations
@see SimpleMappableAttributesRetriever
@see #mappableRoles(String...)